Home / 127,748,809.20-191,371,271.40-76,478,530.80

Finding the Fourth Proportional to 127,748,809.20, 191,371,271.40 and 76,478,530.80

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Solution

The fourth proportional to 127,748,809.20, 191,371,271.40 and 76,478,530.80 is: 114,566,967.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,748,809.20 : 191,371,271.40 = 76,478,530.80 : x
  2. Step 2: Convert to fraction form
    127,748,809.20/191,371,271.40 = 76,478,530.80/x
  3. Step 3: Cross multiply
    127,748,809.20x = 191,371,271.40 × 76,478,530.80
  4. Step 4: Simplify right side
    127,748,809.20x = 14,635,793,674,000,060
  5. Step 5: Solve for x
    x = 14,635,793,674,000,060/127,748,809.20
  6. Step 6: Final answer
    x = 114,566,967.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.