Home / 102,013.02-140,769-56,688.14

Finding the Fourth Proportional to 102,013.02, 140,769 and 56,688.14

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Solution

The fourth proportional to 102,013.02, 140,769 and 56,688.14 is: 78,224.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,013.02 : 140,769 = 56,688.14 : x
  2. Step 2: Convert to fraction form
    102,013.02/140,769 = 56,688.14/x
  3. Step 3: Cross multiply
    102,013.02x = 140,769 × 56,688.14
  4. Step 4: Simplify right side
    102,013.02x = 7,979,932,075.82
  5. Step 5: Solve for x
    x = 7,979,932,075.82/102,013.02
  6. Step 6: Final answer
    x = 78,224.64

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1.5x scale

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.