Home / 103,312,139-142,577,220.48-56,902,375.76

Finding the Fourth Proportional to 103,312,139, 142,577,220.48 and 56,902,375.76

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Solution

The fourth proportional to 103,312,139, 142,577,220.48 and 56,902,375.76 is: 78,528,841.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,312,139 : 142,577,220.48 = 56,902,375.76 : x
  2. Step 2: Convert to fraction form
    103,312,139/142,577,220.48 = 56,902,375.76/x
  3. Step 3: Cross multiply
    103,312,139x = 142,577,220.48 × 56,902,375.76
  4. Step 4: Simplify right side
    103,312,139x = 8,112,982,574,569,327
  5. Step 5: Solve for x
    x = 8,112,982,574,569,327/103,312,139
  6. Step 6: Final answer
    x = 78,528,841.36

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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.