Home / 103,172.02-142,316.91-64,870.86

Finding the Fourth Proportional to 103,172.02, 142,316.91 and 64,870.86

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Solution

The fourth proportional to 103,172.02, 142,316.91 and 64,870.86 is: 89,483.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,172.02 : 142,316.91 = 64,870.86 : x
  2. Step 2: Convert to fraction form
    103,172.02/142,316.91 = 64,870.86/x
  3. Step 3: Cross multiply
    103,172.02x = 142,316.91 × 64,870.86
  4. Step 4: Simplify right side
    103,172.02x = 9,232,220,877.93
  5. Step 5: Solve for x
    x = 9,232,220,877.93/103,172.02
  6. Step 6: Final answer
    x = 89,483.77

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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.