Home / 85,938,574.60-128,718,905.10-74,601,166.60

Finding the Fourth Proportional to 85,938,574.60, 128,718,905.10 and 74,601,166.60

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Solution

The fourth proportional to 85,938,574.60, 128,718,905.10 and 74,601,166.60 is: 111,737,721.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,938,574.60 : 128,718,905.10 = 74,601,166.60 : x
  2. Step 2: Convert to fraction form
    85,938,574.60/128,718,905.10 = 74,601,166.60/x
  3. Step 3: Cross multiply
    85,938,574.60x = 128,718,905.10 × 74,601,166.60
  4. Step 4: Simplify right side
    85,938,574.60x = 9,602,580,483,934,688
  5. Step 5: Solve for x
    x = 9,602,580,483,934,688/85,938,574.60
  6. Step 6: Final answer
    x = 111,737,721.14

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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.