Home / 156,769,985.76-216,343,421.54-86,210,145.92

Finding the Fourth Proportional to 156,769,985.76, 216,343,421.54 and 86,210,145.92

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Solution

The fourth proportional to 156,769,985.76, 216,343,421.54 and 86,210,145.92 is: 118,970,463.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,769,985.76 : 216,343,421.54 = 86,210,145.92 : x
  2. Step 2: Convert to fraction form
    156,769,985.76/216,343,421.54 = 86,210,145.92/x
  3. Step 3: Cross multiply
    156,769,985.76x = 216,343,421.54 × 86,210,145.92
  4. Step 4: Simplify right side
    156,769,985.76x = 18,650,997,939,795,472
  5. Step 5: Solve for x
    x = 18,650,997,939,795,472/156,769,985.76
  6. Step 6: Final answer
    x = 118,970,463.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.